Abstract: The iterative formula of the cold layer economic thickness was deducted , and the formula can quickly and easily calculate the economic thickness of the layer of cold. The analyses and designs were used by examples, and in the calculation process, the economic thickness of the layer of cold drawn after comparison, so as to achieve the purpose of energy conservation. This method is not only simple and easy to understand, but also greatly improve design efficiency and quality.

Key words: Economic thickness , Cold layer ,  Iterative method

摘要： 推导了计算保冷层经济厚度的迭代公式,通过实例分析及对比得出了保冷层的经济厚度。运用该方
法不仅可以简单、快捷、准确地确定保冷层的经济厚度,达到节约能源的目的,而且还可以大大提高设计效率和设计
质量。

关键词: 经济厚度 , 保冷层 , 迭代法